When should temporary traffic control devices be removed from a work site?

Temporary traffic control devices are essential for ensuring safety during construction or maintenance operations on roadways. They are designed to guide, warn, and inform drivers and pedestrians about changes in traffic patterns and potential hazards due to the work being done.

The correct answer highlights the crucial point that these devices should be removed once the project is completed and the roadway has been restored to normal conditions. This is important because the presence of these devices after the work is done can create confusion for drivers, leading to unnecessary hazards and delays. Removing the devices once the work is finished helps to signal to motorists that the area has returned to standard traffic flow and that it is safe to resume normal driving habits.

In contrast, other options suggest timing for the removal of devices that would either prematurely end directives meant to protect public safety or not consider conditions that warrant their continued presence. The timeline of removal depends significantly on the completion of the project and the restoration of safe driving conditions.